well I think the question is specific, I want to traverse an array that is in a .json that is of the form:
{ "N" : 5, "Rotacion" : 42, "Igual" : 20, "Inverso" : 0, "RotacionE" : 47, "Espejo" : 22, "Puntuacion" : 0, "_id" : "563b7b4756ab632f47fe6d7f" , "Lados" : [], "Camino" : [ 6, 5, 4, 21, 22, 7, 2, 3, 20, 23, 8, 1, 18, 19, 24, 9, 0, 17, 16, 15, 10, 11, 12, 13, 14 ], "__v" : 0 }
I have searched some tutorials and they tell me to do the following:
const Value& a = document["a"];
assert(a.IsArray());
for (SizeType i = 0; i < a.Size(); i++) // Uses SizeType instead of size_t
printf("a[%d] = %d\n", i, a[i].GetInt());
the problem with this example is that when compiling I get the following error:
/home/jmuniz/code/Cocos2d-x/interface/Classes/HelloWorldScene.cpp:84:7: error: reference to ‘Value’ is ambiguous
const Value& a = d["Camino"];
AND
/home/jmuniz/code/Cocos2d-x/interface/cocos2d/cocos/base/CCValue.h:54:14: note: candidates are: class cocos2d::Value
class CC_DLL Value
^
In file included from /home/jmuniz/code/Cocos2d-x/interface/Classes/HelloWorldScene.cpp:4:0:
/home/jmuniz/Dev/rapidjson-master/include/rapidjson/document.h:1758:31: note: typedef class rapidjson::GenericValue<rapidjson::UTF8<> > rapidjson::Value
typedef GenericValue<UTF8<> > Value;
^
/home/jmuniz/code/Cocos2d-x/interface/Classes/HelloWorldScene.cpp:84:7: error: ‘Value’ does not name a type
const Value& a = d["Camino"];
here I put the piece of code that opens the .json, so you canhave an idea of what I'm doing
FILE* fp = fopen("/home/jmuniz/code/Cocos2d-x/interface/Resources/res/puzzles(copia).json", "r"); // non-Windows use "r"
char readBuffer[65536];
FileReadStream is(fp, readBuffer, sizeof(readBuffer));
Document d;
d.ParseStream(is);
fclose(fp);
please I need to know why the error occurred? or at least tell me how to access the array to print and then manipulate
It is because there are two types with same name Value
.
To resolve the ambiguity, just use rapidjson::Value
instead, or typedef a new name.